CN109281616A - A kind of straight well double-wall drill pipe system large rock-carrying ability measurement device and measuring method - Google Patents
A kind of straight well double-wall drill pipe system large rock-carrying ability measurement device and measuring method Download PDFInfo
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- CN109281616A CN109281616A CN201811383300.7A CN201811383300A CN109281616A CN 109281616 A CN109281616 A CN 109281616A CN 201811383300 A CN201811383300 A CN 201811383300A CN 109281616 A CN109281616 A CN 109281616A
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- drilling rod
- drill pipe
- wellbore hole
- simulation wellbore
- liquid
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
Abstract
The present invention relates to a kind of straight well double-wall drill pipe system large rock-carrying ability measurement device and measuring methods, including be mixed with landwaste with liquid pool, the simulation wellbore hole being disposed vertically, the double-wall drill pipe system includes the outer drilling rod being located in simulation wellbore hole, the interior drilling rod that is located in outer drilling rod and the drill bit for being connected to outer drilling rod lower end, connection is equipped with axial-flow pump with the pipeline between liquid pool and simulation wellbore hole, simulation wellbore hole upper end pipeline is connected with the compressor that compressed gas is squeezed into outside drilling rod, drilling rod and the drying weighing apparatus for being equipped with solid-liquid separator with the pipeline between liquid pool and weighing to the landwaste drying isolated in connecting, the high-speed camera of record Cutting movement and infall process is equipped on the outside of simulation wellbore hole, outer drilling rod lower half is equipped at intervals with the tachymeter sensor that bits liquid change in flow in flow process is taken in measurement.The present invention can carry out quantitative evaluation to the adaptability of the air reverse circulation drilling technology based on double-wall drill pipe, and provide foundation for optimization technique overall plan.
Description
Technical field
The present invention relates to double-wall drill pipe drilling technology field, especially a kind of straight well double-wall drill pipe system large rock-carrying ability measurement
Device and measuring method.
Background technique
Air reverse circulation drilling technology based on double-wall drill pipe is that a kind of gas injection rate for proposing in recent years is low, at low cost, efficiency
High Novel drill completion technique.The technology uses double-wall drill pipe, i.e., comprising interior drilling rod and two layers of drilling rod of outer drilling rod, gas is by outer brill
Bar input, and migrate downwards along outer drilling rod to drill bit and export.Gas after output carries to be returned on the landwaste of shaft bottom, this is because in gas
When body is migrated downwards along outer drilling rod, a part of gas is flowed out along branch pipe, will cause negative pressure in fluidic vectoring thrust pit shaft, so as to cause gas
Body is returned from shaft bottom higher-pressure region on the low-pressure area of top.On return after gas along the branch pipe of interior drilling rod flow into drilling rod, then by interior
Drill-pipe conveyed to well head is discharged, and completes air reverse circulation drilling process.During being returned in landwaste circulation, if equipment is taken
Rock ability is poor, will form cutting bed in the accumulation that landwaste occurs for shaft bottom, cause abrasion or the bit freezing of drill bit, influence to creep into
Journey.Therefore large rock-carrying ability of the double-wall drill pipe system in straight well is tested and is measured, to air reverse circulation drilling technology
Adaptive constant quantitatively evaluating and optimization technique overall plan are of great significance.
Summary of the invention
The technical problem to be solved by the present invention is in order to overcome the deficiencies in the existing technology, convenient for based on double-wall drill pipe
Air reverse circulation drilling technology adaptability carry out quantitative evaluation, and for optimize technique overall plan foundation, this hair are provided
It is bright that a kind of straight well double-wall drill pipe system large rock-carrying ability measurement device and measuring method are provided.
The technical solution adopted by the present invention to solve the technical problems is: a kind of straight well double-wall drill pipe system large rock-carrying ability survey
Determine device, the simulation wellbore hole matching liquid pool, being disposed vertically including being mixed with landwaste, the double-wall drill pipe system includes being located at mould
Outer drilling rod in quasi- pit shaft, the interior drilling rod being located in outer drilling rod and the drill bit for being connected to outer drilling rod lower end, connection with liquid pool with
Pipeline between simulation wellbore hole is equipped with axial-flow pump, and simulation wellbore hole upper end pipeline, which is connected in outside drilling rod, squeezes into compressed gas
Compressor connects interior drilling rod and is equipped with solid-liquid separator with the pipeline between liquid pool and carries out drying title to the landwaste isolated
The drying weighing apparatus of weight, simulation wellbore hole outside are equipped with the high-speed camera of record Cutting movement and infall process, outer drilling rod lower half
Portion is equipped at intervals with the tachymeter sensor that bits liquid change in flow in flow process is taken in measurement.
To ensure to be connected firmly, hydrojet phenomenon is prevented, the outer drilling rod lower end is equipped with crossover sub, crossover sub
Be connected with downhole drill instrument between drill bit, the simulation wellbore hole upper end is equipped with blowout prevention valve, blowout prevention valve by preventer with
Compressor circuit connection.
Bits liquid pressure change in flow process is taken for real-time monitoring, the pipe between the axial-flow pump and simulation wellbore hole
Road and simulation wellbore hole upper end liquid back pipe road are respectively equipped with the pressure gauge that bits liquid pressure change in flow process is taken in measurement.
It is described to consider tank to be worth doing with the oriented storage with addition landwaste in liquid pool of liquid pool piping connection, with being equipped with stirring in liquid pool
Device.
For image photograph captured by timely recording and storage high-speed motion picture camera, the high-speed motion picture camera passes through data line
It is connected with the computer for carrying out data processing and preservation.
It is shot and is observed more clearly to take rock process to gas reacting cycle convenient for high-speed camera, the interior brill
Bar, outer drilling rod and simulation wellbore hole are all made of transparent PC tube material production.
It is a kind of that the large rock-carrying ability method for measuring of straight well double-wall drill pipe system is carried out using said determination device, it include following step
It is rapid:
A, the Preparatory work of experiment stage:
Each pipe joint is connected, interior drilling rod and outer drilling rod are installed in simulation wellbore hole, is first added one in matching liquid pool
Quantitative water checks that the docking of each pipeline coincide, then will be defeated from simulation wellbore hole lower end with the liquid in liquid pool by axial-flow pump
Enter double-wall drill pipe system；Start compressor, squeeze into gas in outer drilling rod at the top of outer drilling rod, guarantees that double-walled bores in experimental system
Fluid flowing in lever system, stablizes discharge capacity；Double-wall drill pipe start gas reacting cycle work after, starting high-speed camera alignment to
The simulation wellbore hole pipeline section of observation, and tachymeter sensor reading correction is carried out, determine that instrument can work normally；
B, the progress stage is tested:
Landwaste quality is weighed, m is denoted as1, landwaste investment is stirred with liquid pool with water, obtains testing and required contains landwaste
Liquid；Then start axial-flow pump and compressor, gas is made to realize reacting cycle in double-wall drill pipe system, the gas carrying after circulation contains
Landwaste liquid migrates to the separation that solid-liquid separator carries out liquid and landwaste from interior drilling rod, is dried simultaneously to the landwaste isolated
Its weight is weighed, m is denoted as2, η is denoted as large rock-carrying ability, then
Different displacements, landwaste partial size, take unvenile water injection rate Parameter Conditions under repeat more than each step；
Flow process reverse circulating for the gas simulated takes the mobility status of unvenile water simultaneously by high-speed camera shooting
The image data taken is stored；
C, ending phase is tested:
Axial-flow pump is first closed, the relief valve pressure release on experimental channel is opened, turns off compressor, stops gas circulation, it will
Simulation wellbore hole is vented with the sewage in liquid pool, interior drilling rod, outer drilling rod and solid-liquid separator, and measurement experiment terminates.
The beneficial effects of the present invention are: the present invention can measure double-wall drill pipe system gas counterflush drilling in the case of straight well
The large rock-carrying ability of technique obtains each factor pair by changing discharge capacity, landwaste partial size, the size for taking the parameters such as unvenile water injection rate
The impact effect of large rock-carrying ability of the double-wall drill pipe system in straight well, so as to the air reverse circulation drilling skill based on double-wall drill pipe
The adaptability of art carries out quantitative evaluation, and provides foundation for optimization technique overall plan.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the experimental provision structural schematic diagram of optimum embodiment of the present invention.
Fig. 2 is gas reacting cycle process schematic of the double-wall drill pipe of the present invention in straight well.
Fig. 3 is the flow chart of measurement experiment of the present invention.
7. turns of 6. tachymeter sensor of drilling rod in the outer drilling rod 5. of 1. compressor, 2. preventer, 3. blowout prevention valve 4. in figure
12. control valve of changing-over head 8. downhole drill instrument, 9. drill bit, 10. simulation wellbore hole, 11. high-speed camera, 13. axial-flow pump 14.
Blender 15. dries 19. solid-liquid separator of weighing apparatus, 20. pressure gauge with storage bits 17. computer 18. of tank of liquid pool 16.
21. relief valve
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of straight well double-wall drill pipe system large rock-carrying ability measurement device, including it is mixed with landwaste
With liquid pool 15, the simulation wellbore hole 10 that is disposed vertically, it is described with being equipped with above liquid pool 15 to adding landwaste in liquid pool 15
Landwaste and water are sufficiently stirred by blender 14 and are obtained preferably with blender 14 is equipped in liquid pool 15 by storage bits tank 16
Liquid containing landwaste；The interior drilling rod 5 that the double-wall drill pipe system includes the outer drilling rod 4 being located in simulation wellbore hole 10, is located in outer drilling rod 4
And it is connected to the drill bit 9 of outer 4 lower end of drilling rod, 4 lower end of outer drilling rod is equipped with crossover sub 7, crossover sub 7 and drill bit 9
Between be connected with downhole drill instrument 8,10 upper end of simulation wellbore hole is equipped with blowout prevention valve 3, and blowout prevention valve 3 is managed by preventer 2
Road is connected with compressor 1.
The outer drilling rod 4, interior drilling rod 5, crossover sub 7, downhole drill instrument 8 and drill bit 9 constitute the double-wall drill pipe system
The chief component of system, analog gas are squeezed into again from outer drilling rod 4 by interior 5 reacting cycle of drilling rod, cutting carring by compressor 1
The process of drilling is completed in outflow.
Connection is equipped with axial-flow pump 13 with the pipeline between liquid pool 15 and simulation wellbore hole 10, in the liquid outlet end of axial-flow pump 13
Pipeline be equipped with control valve 12.
Drilling rod 5 and the landwaste progress with the pipeline between liquid pool 15 equipped with solid-liquid separator 19 and to isolating in connecting
The drying weighing apparatus 18 for drying weighing can carry out the mixed liquor for recycling discharge from double-wall drill pipe being separated by solid-liquid separation and to separation
Landwaste out is weighed, for calculating large rock-carrying ability.
The high-speed camera of record Cutting movement, infall process and observation nowed forming variation is equipped on the outside of simulation wellbore hole 10
11, the high-speed motion picture camera 11 is connected with the computer 17 for carrying out data processing and preservation by data line.
The tachymeter that bits liquid change in flow in flow process is taken in multiple measurements is equipped at intervals with positioned at outer 4 lower half of drilling rod
Sensor 6, on the pipeline between the axial-flow pump 13 and simulation wellbore hole 10 and 10 upper end liquid back pipe road of simulation wellbore hole is respectively
Large rock-carrying ability of the double-wall drill pipe in vertical well is evaluated for measuring the pressure change during taking bits equipped with pressure gauge 20.
It is shot and is observed more clearly to take rock process to gas reacting cycle convenient for high-speed camera 11, described is interior
Drilling rod 5, outer drilling rod 4 and simulation wellbore hole 10 are all made of transparent PC tube material production.
Drilling process of the double-walled drill pipe system in straight well can be simulated using said determination device, can measure and analyze
The large rock-carrying ability of experimental system with this condition, evaluation system performance；And unvenile water body can be taken by the record of high-speed camera 11 and existed
The change in process of outflow is recycled in pipeline, then the image data of collection is transferred to computer 17, is obtained by data processing
Nowed forming changing rule in Cutting movement and infall process.
It is a kind of that the large rock-carrying ability method for measuring of straight well double-wall drill pipe system is carried out using said determination device, it include following step
It is rapid:
A, the Preparatory work of experiment stage:
Each pipe joint is connected, interior drilling rod 5 and outer drilling rod 4 are installed in simulation wellbore hole 10, with first in liquid pool 15
A certain amount of water is added, checks that the docking of each pipeline coincide, the liquid in liquid pool 15 then will be matched from simulation by axial-flow pump 13
10 lower end of pit shaft inputs double-wall drill pipe system；Start compressor 1, squeezes into outer drilling rod 4, guarantee from outer 4 top of drilling rod by gas
Fluid flowing in experimental system in double-wall drill pipe system, stablizes discharge capacity；After double-wall drill pipe starts the work of gas reacting cycle, starting
High-speed camera 11 is directed at 10 pipeline section of simulation wellbore hole to be seen, and carries out tachymeter sensor 6 and the reading correction of pressure gauge 20,
Determine that instrument can work normally；
B, the progress stage is tested:
Landwaste quality is weighed, m is denoted as1, open storage bits tank 16 and with the control valve 12 between liquid pool 15, landwaste investment matched
Liquid pool 15 is stirred with water, obtains testing required liquid containing landwaste；Then starting axial-flow pump 13 and compressor 1, make gas exist
Reacting cycle is realized in double-wall drill pipe system, the gas after circulation carries liquid containing landwaste and migrates to solid-liquid separator from interior drilling rod 5
19 carry out the separation of liquid and landwaste, its weight is dried and weighed to the landwaste isolated, is denoted as m2, η is denoted as to take rock
Ability, then
Different displacements, landwaste partial size, take unvenile water injection rate Parameter Conditions under repeat more than each step；
Flow process reverse circulating for the gas simulated shoots the mobility status for taking unvenile water by high-speed camera 11
And the image data taken is subjected to storage processing by computer 17；
C, ending phase is tested:
Axial-flow pump 13 is first closed, 21 pressure release of relief valve on experimental channel is opened, turns off compressor 1, stops gas and follows
Ring is vented, measurement experiment by simulation wellbore hole 10, with the sewage in liquid pool 15, interior drilling rod 5, outer drilling rod 4 and solid-liquid separator 19
Terminate.
A kind of straight well double-wall drill pipe system large rock-carrying ability measurement device and measuring method being designed in this way pass through measurement and are added
Landwaste is of poor quality with discharge landwaste, and gas cutting carring mobility status in the interior drilling rod 5 of observation, outer drilling rod 4, can be accurately straight
The large rock-carrying ability for seeing ground description double-wall drill pipe system, is of great significance to the evaluation and optimization of air reverse circulation drilling technique.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (7)
1. a kind of straight well double-wall drill pipe system large rock-carrying ability measurement device, including be mixed with landwaste with liquid pool, be disposed vertically
Simulation wellbore hole, it is characterized in that: the double-wall drill pipe system includes the outer drilling rod being located in simulation wellbore hole, is located in outer drilling rod
Interior drilling rod and the drill bit for being connected to outer drilling rod lower end, connection are equipped with axial-flow pump with the pipeline between liquid pool and simulation wellbore hole,
Simulation wellbore hole upper end pipeline is connected with the compressor that compressed gas is squeezed into outside drilling rod, connects interior drilling rod and between liquid pool
Pipeline is equipped with solid-liquid separator and carries out the drying weighing apparatus of drying weighing to the landwaste isolated, and is equipped on the outside of simulation wellbore hole
The high-speed camera of Cutting movement and infall process is recorded, outer drilling rod lower half is equipped at intervals with measurement and takes bits liquid in flow process
The tachymeter sensor of middle change in flow.
2. straight well double-wall drill pipe system large rock-carrying ability measurement device as described in claim 1, it is characterized in that: the outer drilling rod
Lower end is equipped with crossover sub, downhole drill instrument is connected between crossover sub and drill bit, the simulation wellbore hole upper end is equipped with
Blowout prevention valve, blowout prevention valve are connect by preventer with compressor circuit.
3. horizontal well double-wall drill pipe system large rock-carrying ability measurement device as described in claim 1, it is characterized in that: the axis stream
Pump simulation wellbore hole between pipeline on and simulation wellbore hole upper end liquid back pipe road be respectively equipped with measurement take consider to be worth doing liquid flowing over
The pressure gauge of pressure change in journey.
4. straight well double-wall drill pipe system large rock-carrying ability measurement device as described in claim 1, it is characterized in that: described matches liquid pool
Tank is considered in the oriented storage with addition landwaste in liquid pool of piping connection to be worth doing, with being equipped with blender in liquid pool.
5. straight well double-wall drill pipe system large rock-carrying ability measurement device as described in claim 1, it is characterized in that: the high speed is taken the photograph
Shadow machine is connected with the computer for carrying out data processing and preservation by data line.
6. straight well double-wall drill pipe system large rock-carrying ability measurement device as described in claim 1, it is characterized in that: the interior brill
Bar, outer drilling rod and simulation wellbore hole are all made of transparent PC tube material production.
7. a kind of side for carrying out the measurement of straight well double-wall drill pipe system large rock-carrying ability using measurement device as described in claim 1
Method, it is characterized in that: comprising the steps of:
A, the Preparatory work of experiment stage:
Each pipe joint is connected, interior drilling rod and outer drilling rod are installed in simulation wellbore hole, a certain amount of with being first added in liquid pool
Water, check that the docking of each pipeline coincide, then will be double from the input of simulation wellbore hole lower end with the liquid in liquid pool by axial-flow pump
Wall drill pipe system；Start compressor, squeeze into gas in outer drilling rod at the top of outer drilling rod, guarantees double-wall drill pipe system in experimental system
Fluid flowing in system, stablizes discharge capacity；After double-wall drill pipe starts the work of gas reacting cycle, starting high-speed camera alignment is to be seen
Simulation wellbore hole pipeline section, and carry out tachymeter sensor reading correction, determine that instrument can work normally；
B, the progress stage is tested:
Landwaste quality is weighed, m is denoted as1, landwaste investment is stirred with liquid pool with water, obtains testing required liquid containing landwaste；So
Start axial-flow pump and compressor afterwards, gas is made to realize reacting cycle in double-wall drill pipe system, the gas after circulation, which carries, contains landwaste
Liquid migrates to the separation that solid-liquid separator carries out liquid and landwaste from interior drilling rod, and the landwaste isolated is dried and weighed
Its weight, is denoted as m2, η is denoted as large rock-carrying ability, then
Different displacements, landwaste partial size, take unvenile water injection rate Parameter Conditions under repeat more than each step；
Flow process reverse circulating for the gas simulated is taken the mobility status of unvenile water by high-speed camera shooting and will be clapped
The image data taken the photograph is stored；
C, ending phase is tested:
Axial-flow pump is first closed, the relief valve pressure release on experimental channel is opened, turns off compressor, stops gas circulation, will simulate
Pit shaft is vented with the sewage in liquid pool, interior drilling rod, outer drilling rod and solid-liquid separator, and measurement experiment terminates.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811383300.7A CN109281616A (en) | 2018-11-20 | 2018-11-20 | A kind of straight well double-wall drill pipe system large rock-carrying ability measurement device and measuring method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811383300.7A CN109281616A (en) | 2018-11-20 | 2018-11-20 | A kind of straight well double-wall drill pipe system large rock-carrying ability measurement device and measuring method |
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| CN109281616A true CN109281616A (en) | 2019-01-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647848A (en) * | 2020-11-30 | 2021-04-13 | 中海石油（中国）有限公司天津分公司 | Deep well drilling process simulation experiment device and experiment method |
| CN113628525A (en) * | 2021-09-17 | 2021-11-09 | 西南石油大学 | Device and method for simulating rock carrying of reverse circulation eccentric flow field of gas drilling |
| CN113884658A (en) * | 2021-11-02 | 2022-01-04 | 安徽理工大学 | Test device and method for researching influence of grading of particles of broken rock debris of hard rock machinery |
| CN115902126A (en) * | 2023-02-20 | 2023-04-04 | 四川职业技术学院 | Method for measuring influence of different foam fluids on reverse circulation well-flushing rock-carrying |
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| CN113884658A (en) * | 2021-11-02 | 2022-01-04 | 安徽理工大学 | Test device and method for researching influence of grading of particles of broken rock debris of hard rock machinery |
| CN113884658B (en) * | 2021-11-02 | 2023-10-10 | 安徽理工大学 | Test device and method for researching influence of hard rock mechanical breaking rock debris grain composition |
| CN115902126A (en) * | 2023-02-20 | 2023-04-04 | 四川职业技术学院 | Method for measuring influence of different foam fluids on reverse circulation well-flushing rock-carrying |
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Application publication date: 20190129 |